XRISM resolve observation 202032010

Object

ETA_CARINAE

Abstract

We propose to observe the luminous colliding wind binary Eta Carinae at the start and end of XRISM AO2. This interval is important since periastron passage of the binary is late summer 2025 and during AO2 the X-ray spectrum changes rapidly. XRISM/Resolve spectra are needed to determine how the dynamics of the X-ray emitting region of the colliding wind shock change with increasing stellar separation and changing shock orientation.

Summary of xrismmastr

      obsid   = 202032010 / Unique Observation/Sequence Number
      object  = ETA_CARINAE / Object name
      pi_name = CORCORAN MICHAEL / Proposal Principal Investigator Name
      ra  = 161.264082185009 / Right Ascension (Pointing Position) (deg)
      dec = -59.6855137993231 / Declination (Pointing Position) (deg)
      roll_angle = 80.0017962695878 / Roll Angle (deg)
      start_time = 2025-11-09T08:52:04 / Start Time of the Observation
      stop_time  = 2025-11-12T07:11:04 / Stop Time of the Observation
      exposure   = 126084.91146 / Effective Total Observation Exposure (s)
      public_date= 2026-11-20 / Public Date

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